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Kassem Harris, Michel Chalhoub, Ashish Koirala 
World J Gastrointest Surg 2(9):291-294. Published online Sep 27, 2010. doi: 10.4240/wjgs.v2.i9.291
Koji Tanaka, Hiroaki Ohigashi, Hidenori Takahashi, Kunihito Gotoh, Terumasa Yamada, Isao Miyashiro, Masahiko Yano, Osamu Ishikawa 
World J Gastrointest Surg 2(9):295-298. Published online Sep 27, 2010. doi: 10.4240/wjgs.v2.i9.295